britt381 britt381
  • 23-03-2016
  • Mathematics
contestada

30-20 show your work using quick tens

Respuesta :

ithinkthisisit
ithinkthisisit ithinkthisisit
  • 24-03-2016
30-10=20
20-10=10

or
10+20=30
Answer Link
annie4321 annie4321
  • 24-03-2016
30-20=10 10 is the answer
Answer Link

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